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tricky-terminating MCQ Questions for Class 10

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3 questions tagged with tricky-terminating.

Question 1/3 Expert Mathematics Real Numbers Decimal expansion of rational numbers Class 10 Level 21

किस भिन्न का दशमलव सांत है पर दिए गए हर में (31) भी दिखाई देता है?

Which fraction has a terminating decimal even though the given denominator contains (31)?

Explanation opens after your attempt
Correct Answer

A. \(\frac{62}{2^4\cdot 5^3\cdot 31}\)

Step 1

Concept

Since \(62=2\cdot 31\), the factor (31) cancels and the reduced denominator is \(2^3\cdot 5^3\). If an extra prime appears, check cancellation first.

Step 2

Why this answer is correct

The correct answer is A. \(\frac{62}{2^4\cdot 5^3\cdot 31}\). Since \(62=2\cdot 31\), the factor (31) cancels and the reduced denominator is \(2^3\cdot 5^3\). If an extra prime appears, check cancellation first.

Step 3

Exam Tip

\(62=2\cdot 31\) है इसलिए (31) कट जाता है और सरल हर \(2^3\cdot 5^3\) बचता है। अतिरिक्त अभाज्य गुणनखंड दिखे तो पहले कटौती देखें।

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Question 2/3 Expert Mathematics Real Numbers Decimal expansion of rational numbers Class 10 Level 20

किस भिन्न का दशमलव सांत है पर दिए गए हर में (29) भी दिखाई देता है?

Which fraction has a terminating decimal even though the given denominator contains (29)?

Explanation opens after your attempt
Correct Answer

A. \(\frac{58}{2^3\cdot 5^2\cdot 29}\)

Step 1

Concept

Since \(58=2\cdot 29\), the factor (29) cancels and the reduced denominator is \(2^2\cdot 5^2\). If an extra prime appears, check cancellation first.

Step 2

Why this answer is correct

The correct answer is A. \(\frac{58}{2^3\cdot 5^2\cdot 29}\). Since \(58=2\cdot 29\), the factor (29) cancels and the reduced denominator is \(2^2\cdot 5^2\). If an extra prime appears, check cancellation first.

Step 3

Exam Tip

\(58=2\cdot 29\) है इसलिए (29) कट जाता है और सरल हर \(2^2\cdot 5^2\) बचता है। अतिरिक्त अभाज्य गुणनखंड दिखे तो पहले कटौती देखें।

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Question 3/3 Expert Mathematics Real Numbers Decimal expansion of rational numbers Class 10 Level 19

किस भिन्न का दशमलव सांत है पर दिए गए हर में (19) भी दिखता है?

Which fraction has a terminating decimal even though the given denominator contains (19)?

Explanation opens after your attempt
Correct Answer

B. \(\frac{38}{2^2\cdot 5^3\cdot 19}\)

Step 1

Concept

Since \(38=2\cdot 19\), the factor (19) cancels and the reduced denominator is \(2\cdot 5^3\). Even if an extra prime appears, check cancellation first.

Step 2

Why this answer is correct

The correct answer is B. \(\frac{38}{2^2\cdot 5^3\cdot 19}\). Since \(38=2\cdot 19\), the factor (19) cancels and the reduced denominator is \(2\cdot 5^3\). Even if an extra prime appears, check cancellation first.

Step 3

Exam Tip

\(38=2\cdot 19\), इसलिए (19) कट जाता है और सरल हर \(2\cdot 5^3\) बचता है। अतिरिक्त अभाज्य गुणनखंड दिखे तो भी पहले कटौती देखें।

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